Portable rope hoist.



s. E. KALBACH.

PORTABLE ROPE HOIST.

APPLICATION FILED MAR. 4. 1915.

1,153,496. PatentedSept. 14, 1915.

2 SHEETS-SHEET l.

FIG1 INVENTQR wrrmgssss r r I A'I'I'ORNEY OLUMBIA PLANDORAPH COUWASHXNOTON, D- C.

S. E. KALBACH.

PORTABLE ROPE HOIST.

APPLICATION FILED MAR. 4. 1915.

1,153,496. I Patented Sept. 14, 1915.

2 SHEETSSHEET 2.

FIG; 2.

W fi m 4 INVENTOR WITNESSES ATTORNEY COLUMBIA PLANOORAPHCD, WASHINGTON a. c.

sAMunLnnwAnnKALBAor-r, or READING, rnnivsviivnivin, ASSIGNOR. 'ro READING CRANE AND HOIST WORKS, OFREADING, PENNSYLVANIA.

. PORTABLE ROPE HoIsr.

Specification of Letters Patent.

Patented Sept. 1a, 1915.

? Application filed March 4., 1915. $eria1 No. 11,972.

To all whom it may concern:

1 Be it lmown that I, SAMUEL EDWARD KAL- BAGH, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Portable BopeHoists, of which the following is a specification.

i This invention relates to improvements in hoists and more particularly to what is known as a portable hand operated rope hoist.

"The object of' thepresent invention isto provide a simple, light, portable device-in which the lifting capacity, relative to the weight of the device, will attain the maximum, and which may be constructed with relatively low cost.

The invention consists primarily of a rotatable drum on which the lifting rope is wound, and means for rotating the drum which consists of a train of gears located entirely within the confines of saiddrum and so arranged as to increase the power during its transmission from the power shaft to the inner surface of said drum, with both of which the train of gears meshes.

Broadly stated, the invention consists of a portable, hand operated rope hoist with the'hoisting train of gears located within the drum.

The invention is more fully described in Y the following specification and clearly illustratedin the accompanying drawings, in which v Figure l is a front, elevational view of my hoist. Fig. 2 is a transverse, sectional view taken through Fig. 1 on line AA, and enlarged.

In the drawings the numeral 1 designates a supporting hook, by means of which the hoist may be suspended from any suitable support. This hook is attached to the housmg 2, within which the hoisting drum is mounted.

The numeral 3 designates the hoisting drum, which is provided with the usual peripheral grooves& for the accommodation of a suitable hoisting rope which rope carries the usual lifting hook 5 for engagement with'the article to be raised or lowered.

The numeral 6 designates a hand chain wheel and 7 the chain, through the medium of which hand power is applied to the lifting mechanism of the hoist.

. tate therewith.

- The numeral 10 designatesthe power shaft on which the wheel 6 is mounted and which are adapted to rotate with each other. This wheel 6 is provided with an automatic brake device of well known structure, designated by the numeral 11. This power shaft carr'les a pinion 12 on its'inner extremity and the shaft isrotatably mounted in a yoke 13. This yoke,"together with a like or duplicate one, is mounted on the inner faces of the housing plates 14:, and a pair of studs 15 pass through both plates and both yoke inembers andhold the relative parts imposition.

The yoke members are each provided with peripheral bearings 7 and on these hearings the winding drum 3 rotates. One end of the drum is provided with a closure plate 18 and this plate is provided with a journaled opening which bears on the bearing 17 at one end of the device while the body of the drum accommodates itself to the opposlte one.

The studs 15 in addition to holding the yokes, also serve as bearings for the train of gears whereby power is transmitted from the power shaft to the drum. This train of gears comprises a double gear wheel 20 which meshes with the pinion 12 on the end of the power shaft through the teeth on its greatest diameter, while the teeth on its smaller diameter mesh with a-second double gear 22, mounted on the opposite stud 15, and whose smaller diameter in turn meshes with a single gear wheel 25 on the first named stud. This single gear wheel 25 in turn meshes with an interiorly toothed ring 26 secured to the inner surface of the drum 3 by means of screws 28 and adapted to ro- It will therefore be noted that the power applied through the hand wheel 6 will be transmitted to the hoisting drum through the medium of the train of gears thus described. The internally toothed ring 26 fits snugly inside the drum, and when worn or broken, may readily be removed andreplaced by removing the securing screws 28. The closure plate 18 is secured to the open end of the drum by means of studs 80, and when in position, serves to hold the train of gears against lateral movement on the studs. The drum is therefore securely closed and serves as a receptacle for the lubricant for the gears, which lubricant may be entered through the opening 31. It is evident that by thus com"- pactly housing the entire hoisting mecha-' nism within thehoisting drum,-I am able to provide a relatively small and light hoist,

and one that may be easily moved about and one in which the operating mechanism for the hoist is'protected against injury and thoroughly lubricated. A hearing sleeve 3 L is interposed between each of the studs 15 and the gears, on which the gears rotate, so that the only rotatable parts are the gears and the drum, together with the power hook therefor, a pairof yokes within the housing, a power shaft, a pinion on said shaft, a pair of studs passing through the housing plates and the yokes, annular beargreater diameter,

ings on the outer surfaces 'of'said yokes, a

the inner surface of the drum and adapted torotate therewith, a gear wheel mounted n one of-the studs and meshing with said toothed ring,a double gear mounted on the opposite stud and meshing-with its smaller diameterwith said gear wheel, a second double gear mounted on the first named stud and meshing with the first named'double' gear through its smaller diameter and with the pinion on the power shafti through its In testimony whereofl'aifix in presence of two witnesses.

SAMUEL EDWARD; KA Aon. Witnesses:

r CLARA E. Youwe, i

'EnA Km ,Y.

Copies of this patent may be obtained for five cents each, by addressing the flo mmiss ionerrof l atents,

Washington, D. G.

my signature 

